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Another AFR Prob!

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Old 24 June 2003, 03:50 PM
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Myk
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Question

I've got a Dawes AFR meter (Scooby calibrated) fitted to a MY93 WRX

I started it this morning the meter jumps straight to the blue light and there it stays, car runs like a bag of poo!

Nothing from the CEL?

Any ideas

Mike
Old 24 June 2003, 04:06 PM
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Charlie H
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Mine did this a few weeks back. Even without the engine running but ignition on it went straight to blue. A week later my fuel pump died and when it was replaced my afr was ok again I couldn't understand how a failing fuel pump could make the mixture rich but it's been fine since. I have a 93wrx and dawes afr as well.

[Edited by Charlie H - 6/24/2003 4:07:19 PM]
Old 24 June 2003, 04:15 PM
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Myk
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Cool

Cheers buddy

I'll start locating a fuel pump then

Myk
Old 24 June 2003, 04:18 PM
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Dark Blue Mark
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Is blue full rich?

Sounds iffy, almost like aither the MAF or 02 has gone into failsafe? Was it working fine previously?

Also worth checking the wires with a multimeter.

MB
Old 24 June 2003, 04:22 PM
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Myk
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Question

I've replaced the MAF but its been working ok since fitted, albeit would work earlier than expected ie before engine was warm??

Think I'm gonna have to have a play

Old 24 June 2003, 04:30 PM
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Dark Blue Mark
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Hmmm,

Should take a couple of mins to work, assuming its a heated sensor.

MB
Old 24 June 2003, 07:19 PM
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Charlie H
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Mine always takes about 5 mins to come on!
Old 24 June 2003, 07:23 PM
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Charlie H
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Mine ran very bad for a day before the pump failed. Knocklink showed some det the weekend before it died and the idling was poor. I did check my lambda first though.
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